Accumulation of bis(tributyltin) oxide by the marine mussel Mytilus edulis. [Hytilus edulis; Isochrysis galbana]
Marine mussels, primarily Mytilus edulis, accumulated bis(tributyltin) oxide (TBT) when it was either dissolved in water (0.5 ..mu..g L/sup -1/) or associated (absorbed or adsorbed) with phytoplankton Isochrysis galbana. Uptake occurred rapidly under both protocols but was more rapid and caused higher TBT burdens when accumulation occurred by ingestion of phytoplankton. TBT accumulated differentially in tissues. Highest burdens in viscera or gills were approx.4.5 ..mu..g of TBT (g of tissue)/sup -1/ following water exposure lasting 47 days and approx.5 ..mu..g of TBT (g of gill)/sup -1/ or (g of viscera tissue)/sup -1/ following 30 days of exposure to contaminated Isochrysis. This corresponds to a bioconcentration factor of approx.5000 from water but <2 from food (on a ..mu..g g/sup -1/ basis). Mantle or muscle tissue had TBT burdens one-half to one-third the level of viscera or gill tissue. Steady state between water and tissue was not observed. When TBT exposed mussels were returned to the field, t/sub 1/2/ for depuration was approx.14 days. Depuration rate constants estimated from uptake and release phases did not agree. This observation suggests differences in laboratory and field depuration processes by bivalve molluscs. Therefore, bioconcentration factor (BCF) measurements made in the laboratory may not accurately predict those obtained from environmental exposures. Neither humic acids nor kaolin significantly reduced accumulation of TBT.
- Research Organization:
- Univ. of California, Oakland
- OSTI ID:
- 6644537
- Journal Information:
- Environ. Sci. Technol.; (United States), Vol. 20:9
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ANTIFOULANTS
BIOLOGICAL ACCUMULATION
TISSUE DISTRIBUTION
MUSSELS
CONTAMINATION
TIN COMPOUNDS
EXPERIMENTAL DATA
GILLS
HUMIC ACIDS
INGESTION
INTESTINES
KAOLIN
PHYTOPLANKTON
UPTAKE
WATER POLLUTION
ANIMALS
AQUATIC ORGANISMS
BODY
CLAYS
DATA
DIGESTIVE SYSTEM
DISTRIBUTION
GASTROINTESTINAL TRACT
INFORMATION
INTAKE
INVERTEBRATES
MOLLUSCS
NUMERICAL DATA
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANS
PLANKTON
POLLUTION
RESPIRATORY SYSTEM
560300* - Chemicals Metabolism & Toxicology